Where to get regression treatment effect instead of average treatment effect after using propensity scoring match

In Dehejia and Wahba (2002), after the average treatment effect column, there is also a new column "regression treatment effect". I know the average treatment effect is just the average difference of the treated and the matched controlled outcome. I am not sure what the regression treatment is supposed to be and how can I obtain it from Stata.

• You need to use a purposeful strategy. See for example BBR chapter 17: fharrell.com/p/blog-page.html Oct 21, 2017 at 15:07
• Minimal name and date references should (please) be fleshed out as if giving a journal reference in a paper or dissertation (or, if more appropriate, a stable URL). You shouldn't assume that people are familiar with the literature you know. Oct 23, 2017 at 17:51
• Correct link: hbiostat.org/bbr Apr 20 at 16:18

On page 154 of D&W (2002)$^*$, it says
reg outcome_var i.treated age education ... if matched==1 [iw = weight_var]

$^*$ Propensity Score-Matching Methods For Nonexperimental Causal Studies by Rajeev Dehejia and Sadek Wahba, The Review of Economics and Statistics, 2002, vol. 84, issue 1, 151-161